<div class="alert alert-danger text-center">
	<h4> {{head}}</h4>
	<hr />
	<i class="fa fa-warning fa-4x"></i>
	<p>
		{{content}}
	</p>
	<hr />
	<a href ng-click="ok()" class="btn btn-danger">确定</a>
	<a href ng-click="cancel()" class="btn btn-danger">取消</a>
</div>
